We're thinking alike. I tried nailing them into place, but the shingles pulled the nails out. I tried screws, but the shingles either split, or the wood went past the screw head. Most split. I tried to nail them and use a strap like Brandi suggested, but I wasn't able to keep them in place and get the strap on them. It wasn't pretty. LOL
Now I've been working on forms. The first two tries relied on weight to bend them into a form. You wouldn't believe how much weigh those shingles can hold and not bend!!!!
My current plan is use leverage and a form that will hold the thick end in place and bend the shingle over my form. I plan to build it some time this week, so wish me luck
Eddie